View Single Post
2018-03-15, 12:19   #7
JeppeSN

"Jeppe"
Jan 2016
Denmark

25·5 Posts

Quote:
 Originally Posted by Dr Sardonicus I would say 2 (a = b = 1).
I should have said I was interested in odd primes only (and the number 1 is not prime).

Therefore a and b cannot both be odd. And as said by science_man_88 above, additionally a and b must be coprime.

These comments imply that a and b are distinct. Without loss of generality, a > b > 0.

/JeppeSN